java:学生管理系统

以下是一个简单的Java学生管理系统的实现，包括添加、删除、修改和查看学生信息的功能。该系统由Student.java、Main.java、FunctionModule.java和Extents.java四个部分组成。

1. Student.java：定义了一个学生类，包括学生的姓名、年龄、性别和学号等属性。

public class Student {
    private String name;
    private int age;
    private String gender;
    private String id;

    public Student(String name, int age, String gender, String id) {
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }
}

2. FunctionModule.java：定义了一个功能模块类，包括添加、删除、修改和查看学生信息的方法。

import java.util.ArrayList;
import java.util.Scanner;

public class FunctionModule {
    private ArrayList<Student> students = new ArrayList<Student>();

    public void addStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入学生姓名：");
        String name = scanner.next();
        System.out.println("请输入学生年龄：");
        int age = scanner.nextInt();
        System.out.println("请输入学生性别：");
        String gender = scanner.next();
        System.out.println("请输入学生学号：");
        String id = scanner.next();
        Student student = new Student(name, age, gender, id);
        students.add(student);
        System.out.println("添加成功！");
    }

    public void deleteStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要删除的学生学号：");
        String id = scanner.next();
        for (int i = 0; i < students.size(); i++) {
            if (students.get(i).getId().equals(id)) {
                students.remove(i);
                System.out.println("删除成功！");
                return;
            }
        }
        System.out.println("未找到该学生！");
    }

    public void modifyStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要修改的学生学号：");
        String id = scanner.next();
        for (int i = 0; i < students.size(); i++) {
            if (students.get(i).getId().equals(id)) {
                System.out.println("请输入学生姓名：");
                String name = scanner.next();
                System.out.println("请输入学生年龄：");
                int age = scanner.nextInt();
                System.out.println("请输入学生性别：");
                String gender = scanner.next();
                students.get(i).setName(name);
                students.get(i).setAge(age);
                students.get(i).setGender(gender);
                System.out.println("修改成功！");
                return;
            }
        }
        System.out.println("未找到该学生！");
    }

    public void viewStudent() {
        for (int i = 0; i < students.size(); i++) {
            System.out.println("姓名：" + students.get(i).getName() + " 年龄：" + students.get(i).getAge() + " 性别：" + students.get(i).getGender() + " 学号：" + students.get(i).getId());
        }
    }
}

3. Main.java：定义了一个主类，包括学生管理系统的主界面和各个功能的调用。

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        FunctionModule functionModule = new FunctionModule();
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("欢迎使用学生管理系统！");
            System.out.println("1.添加学生信息");
            System.out.println("2.删除学生信息");
            System.out.println("3.修改学生信息");
            System.out.println("4.查看学生信息");
            System.out.println("5.退出系统");
            System.out.println("请选择操作：");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    functionModule.addStudent();
                    break;
                case 2:
                    functionModule.deleteStudent();
                    break;
                case 3:
                    functionModule.modifyStudent();
                    break;
                case 4:
                    functionModule.viewStudent();
                    break;
                case 5:
                    System.out.println("谢谢使用！");
                    System.exit(0);
                default:
                    System.out.println("输入有误，请重新输入！");
                    break;
            }
        }
    }
}

4. Extents.java：定义了一个扩展类，包括学号遍历和清空控制台的方法。

public class Extents {
    public static void traverseId(FunctionModule functionModule) {
        for (int i = 0; i < functionModule.students.size(); i++) {
            System.out.println("学号：" + functionModule.students.get(i).getId());
        }
    }

    public static void clearConsole() {
        System.out.print("\033[H\033[2J");
        System.out.flush();
    }
}